Analysis of the Flattening Force of Thin-Walled Lenticular CFRP Booms

作者：Gao, Ji Feng; Hu, Jian Hui; Chen, Wu Jun^*; Lu, Shao Ming; Fang, Guang Qiang; Peng, Fu Jun

来源：Journal of Astronautics, 2017, 38(5): 467-473.

DOI：10.3873/j.issn.1000-1328.2017.05.004

• Approximate algorithms
• CFRP composites
• Experimental analysis
• Flattening force
• Thin-walled

The flattening force is studied for the design of the thin-walled lenticular carbon fiber reinforced polymer (CFRP) booms cross-section.Two thin-walled lenticular CFRP booms with different cross sections, lengths, layers and material parameters are selected. Their flattening force and deformation characteristics are analyzed by the experiments and numerical simulations. One approximation algorithm for the flattening force is established by assuming the nonexistence of the local contact deformation, and the cross-section is linearly deformed with equal curvature;the other is established by assuming the function of the partial contact deformation.Through analyzing the results of the experiments, numerical simulations and approximation algorithms, it is found that the flattening force and the cross-section show strong non-linear characteristics during the flattening process, and the approximation algorithm 2 can be used to estimate the flattening force.

• 出版日期2017
• 单位上海交通大学